PILLAR has provided various types of mechanical seals with secure high gas-tightness since 1951 when the Company first developed a mechanical seal to prevent the leakage of hazardous fluids. These mechanical seals are applied in a wide range of industries, including petroleum refining, chemical, paper milling, steelmaking, water supply and sewerage, food processing and ship building. PILLAR's mechanical seals are fully compliant with JIS and ISO standards and deliver a stable performance even under the harshest operating conditions.